Improved cutter-head for wood of lead-pencils



UNITED STATES PATENT OFFICE.

FREDERICK G. JENKINS, OF NEV YORK, N. Y.

IMPROVED CUTTER-HEAD FOR. WOOD OF LEAD-PENCILS.

Specification forming part of Letters Patent N0. 38,488, dated May 12, 1863.

To @ZZ whom, it may concern.'

Be it known that I, FREDERICK G. JEN- KINS, of the city, county, and State of New York, have invented a new and Improved Gutter-Head for Cutting the Woods for Lead -Pencil Gases; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specilication, in which- Figure 1 is a longitudinal view of the head without the cap, cutters, and saws. Fig. 2 is a transverse sectional view of Fig. 1. Fig. 3 is a longitudinal front view 0f the cap forming the top of the head. Fig. 4 is a transverse sectional view of Fig. 3. Fig. 5 is a screwbolt. Fig. 6 is a longitudinal view of an adjustable blank. Fig. 7 is a sectional view of Fig. 6. Fig. 8 is a screw-bolt. Fig. 9 is a 1ongitudinal view of the full head with the cutters or knives and segments of saws set in working order, and showing the position of the saws. Fig. l() is a transverse sectional view of Fig. 9. Figs. ll and 14 are the cutters or knives. Fig. 12 is a longitudinal front or top view of the full head with the cutters or knives and saws set in working order, and exhibiting the position of the knives or cutters. Fig. 13 is a transverse sectional view of Fig. l2.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents the base or body of the head, and may be made of iron, brass, or other suitable metal, and is cast in one solid piece, as shown in Fig. 1. To the top of this base or body is attached the steel plate B, which is held firmly in its place by the screws C C, and forms the bottom or bed of the mortise in which are placed the knives or cutters D D. Above the plate or cap B is placed the cap or top of the head G, which slides into the upper flanges of the base A, through the mortises M M, as shown in Figs. 1 and 9, and is held rmly in its place in the head by means of the screw-bolt N, which passes longitudinally through the Lipper flanges of the base A and the cap Gr. The cap or top G, when in place, forms the top of the mortise into which are placed the knives or cutters D D, and the knives, beingplacedin position, are held -rmly in their places by means of the set-screws K,

which pass through the head into the mortise and press strongly against the side of the knife nearest the flange of the base A, thus holding the knives firmly inthe mortise. The cap or plate B, besides forming the base or bottom of the mortise `for holding the knives or cutters D D, also serves the purpose of turning the shaving quickly, as is done in the ordinary double-iron hand-plane.

E E represent the blanks to be used between the segments of saws F F, and are constructed in two parts, and are adjustable by means of the screws L L. The segments of saws, when placed in their position in the head, are with the blanks intervening held all together by means of the screw-bolt J, which passes through the lower flanges of the base A and through the segments of saws and blanks. The segments of saws are further made adjustable by means of the slotted hole in them through which the screw-bolt J passes, as is plainly shown in Fig. 10. The segment of saws and intervening blanks, being placed in their position in the head, and adapted to and adjusted for the work in the manner already described, are held firm in their place in the head by means of the set-screws O O, as is plainly shown in Fig. 9.

The operation of my invention is as follows: When the head is placed over a workin g table or bed, the material to be worked on is supplied by a feed-roller, and as the head revolves the segments of saws describing the larger circle first cut the wood in strips, and the knives iollowing on the wood immediately after those describing the larger circle, make the groove to receive the lead, and the shorter knives plane or smooth the surface of the wood. The knives also may be set evenly,

and simply plane the wood, and the saws may be so adjusted as to make the groove, when the wood may afterward be separated by an ordinary saw.

I do not claim as new the idea of using knives set stationary in a revolving head for the purpose of planing or grooving wood. Nor do I claim as new the use of blanks bc tween the saws, made in two parts, and adjustable by means of the screw holding said parts together; but

What I do claim as new in my invention, and desire to secure by Letters Patent, is-

1. The arrangement of the plate B with the l shown and described.

cap Gr, for the purpose of forming the in ortse one head7 for the purpose ofpaning, grooving, to receive the knives or cutters D7 as herein and separating at one and the same operation the Woods for lead-pencil cases.

The use ofseginents of saws set station- E Gn JENKINS. ary 1n a revolving head, for the purpose of growing and separating the Wood7 as herein Witnesses: described. GHAs. A. FOWLER,

3. The combination of the several parts in JOHN HEWITT. 

